Car-truck side frame.



G. T. JOHNSON. GAR TRUCK SIDE FRAME. APPLICATION FILED AUG. 8,1913

Patented J an. 18, 1914.

Honey i ITEM ST- PATENT GEORGE T JOI-INSON, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE STEEL CAST- INGS COMPANY, OF COLUMBUS, OHIO.

CAR TRUGK SIDE FRAME.

Specification of Letters Patent.

Patented Jan. 13,1914.

Application filed August 8, 1913. Serial No. 7833M.

'0 all whom it may concern:

Be it known that I, Gnonon T. Joni sox, of Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Car-Truck Side Frames; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to J make and use the same.

' My invention relates to car truck side frames, particularly adapted for freight cars where the service involves the carrying of heavy loads, and where strength and simplicity of construction as well as economy in manufactureis desired.

It is well known that in passing arou 'rl curves or over rough tracks, the side movement of the cars or the lateral thrust, is, at times, considerable. It is also well known,

that in using steel for parts which are sub-.

jected to considerable and intermittent stresses, the presentation of i. surface of considerable width or size, to resistance of fiber stresses, is decidedly more effective than where an edge, or a comparatively small surface is provided for such purpose. A gain in making castings, particularly of steel, where an'edge or comparatively thin surface is provided for taking fiber stresses, a. slight imperfection in the casting would more seriously impair the strength and serviceability of the outer fibers, than a greater imperfection would in a larger surface.

The object, therefore, of my invention is to provide a truck side frame adapted to have not only the necessary vertical strength but also have its metal so disposed as to withstand all lateral stresses to which the same may be subjected, and it consists in a cast metal side frame having its top, diagonal and upright members of channel section. In'the accompanying drawings, Figure 1 is a view in elevation of a truck side embodymy invention, and Figs. Q, 3, 4:, 5 and 6 are views in section taken respectively on the lines AB; (3-D; E F; G-H, and K-L of Fig. 1. I

The frame consists of the top member 1, diagonal members 2, integral at their upper ends with member 1, and at their lower ends with bottom member f, and the vertical or upright members 3 integral at their upper ends with top member 1, and at their lower ends with the bottom and diagonal members 4 and 2. The two ends of the.frame, at the junctureof the top and diagonal members, are provided with the extensions 5, are designed to rest on the journal boxes, and through which the load that is imposed on the truck frame, is supported on the wheels.

The top of the bottom member 4 forms a seat for the springs carrying the bolster and the inner flange of the top member, at the juncture of the latter with the two upright which.

members, is extended to form brake hanger brackets as shown in Fig. 1.

The members 1, 2, 3 and 4: of the frame, are of channel shape in cross-section, beaded as at 6 onthe outer edges of the side members or flanges of the channels, as clearly shown in Figs. 2, 3, 4, 5 and 6, so that in the event of lateral strains falling upon any of the members, a comparatively wide surface is presented to take care of the fiber stresses.

The top of the bottom member 4. is closed as shown in Fig. 6 in order to form a seat 7 .for the springs, which carry the bolster. The obect of the heads 6 is to provide slight lateral projection which stiffen the vertical surfaces-of the channels laterally and avoids all sharp or comparatively thin edges, which would be liable, under ordinary stresses to check or crack.

edges of all the members are the floors or closed sides of the channels and the closed bottom together with sides of the channels present extensive surfaces or edges that minimize the impairment of a casting, in the event of a' defect. if I Having fully described my invention what I claim as new and desire to secure by LettersPatent, is

1. A cast metal side frame having top, diagonal and upright members so located as to form a central opening and an opening at each side of the central opening, thesaid members being of channel section, the 'free edges of the flanges'of which, form the walls of the two side openings.

In this improved side frame, the outer 5 a. A cast metal side frzime'f'or car truck In testimony WhIiGOfJIhaVB signed this consisting of top, diagonal and. upright specification in'the presence of two subscrib 10 I} members of channel section and bottom mg witnesses.

member of box section the top member of V V i J 5 which at the juncture with the upright mem- GEORGE N" her 'being so constructed and flanges ex Witnesses:

tended, so as to enable the brake hanger F. G. BENNETT,

bracket to be cast integral with same. H; H. CRAIGLOW. 

